Why ndarray does not support POD type?

[vgonakhc]

The code below gives me an error "error C2027: use of undefined type 'nanobind::detail::ndarray_config_t<int,APOD,nanobind::no_framework,nanobind::detail::shape<-1>,nanobind::c_contig>'
"
I expect that it should work because APOD is a trivially copyable POD with known size.

struct APOD {
    Matrix4f m;
    uint32_t b;
    float c;
};

struct TestArray { 
...
    APOD * data = nullptr;
};

using NBAPODArray = nb::ndarray<APOD, nb::no_framework, nb::shape<-1>, nb::c_contig>;

nb::class_<TestArray>(m, "TestArray")
    .def(nb::init<>())
    .def("data",
        [](TestArray& m) { 
            return NBAPODArray(m.data, {100});
        },
        nb::rv_policy::reference_internal);

[wjakob]

Please review the nd-array documentation on readthedocs, there is a paragraph explaining the reasons in detail.